If the price of Bitcoin has reached 100k$ then transactions will continue and as it happens today, because there is still hope Bitcoin can reach 1 million dollars because the value of Bitcoin has no limit, although later there will be a decrease it will only occur half of the price and there is definitely a high possibility that it can increase again, it is the same as we feel today, In the past, the value of Bitcoin was very low and far like the value that is happening today, then everything will continue to rotate as it is today even though the value has reached 100k$.
Your optimism, I must say, is refreshing in this often volatile world of cryptocurrencies. We can ascertain, as per your theory, that as long as there's hope for further growth, Bitcoin's transactions would indeed continue - even if its value crosses the $100k mark. You suggest a cycle, a financial ebb and flow, if you will.
However, I'd implore you to consider the market dynamics as well. Notably, the concepts of demand, supply, and market equilibrium. Essentially, when Bitcoin reaches such a towering value, its demand might shrink due to its inflated price, affecting the transaction volume.
Also, lets not overlook the fact that investor confidence is crucial in this scenario. If they suspect a "bubble burst," a sudden withdrawal could occur, causing a precipitous drop. Thus, although your theory of a "half price decrease" seems reasonable, market unpredictability could sway the pendulum either way.